Gas-burner.



PATENTED JUNE 7, 1904..

No. 761,820.' ,l

T. E. CHARLTON.

GAS BURNER.

APPLIOATION FILED SEPT. 26,1903.

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7%. ff 6W TH: Noamspzrins co. PHoTn-Llmo, wmwmm'on' n t Patented June "I, 1904.

PATENT OFFICE.

THOMAS E. CHARLTON, OF CLEVELAND, OHIO.

`@IAS-BURNER.

SPECIFICATION forming part of Letters Fatent N0. 761,820, dated June '7, 1904.

Application filed September 26, 190,3. Serial No. 174,75 7. (No model.)

lenable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and i to the letters of reference marked thereon, which form apart of this specification.

This invention relates particularly to Bunsen burners used for incandescent lights, and is designed to provide an improved adjustable burner particularly characterized by the fact that it is suitable for either natural or artificial gas.

It is known that artificial gas requires a burner in which the gas is permitted to rise from the check or orifice in a more or less diffused form, so that it will be thoroughly mixed with the air, and this result is usually effected by making a number of small holes, through which the gas escapes; but naturalgas requires a burner that will permit the gas to rise from the orifice more in a body,and the distance from the orifice to the mantle or gauze must generally be greater than with artificial gas, so as to allow it to combine -with the air in the proper proportions. Of course the correct distance in either case varies in proportion to the pressure; but, other things being equal, the distance with natural gas should be greater. A small single orifice is perfectly suited to natural gas, but will not prove satisfactory with artificial gas, which requires to be spread or diffused to a greater degree.

By the invention hereinafter described a burner is provided in which a separate orifice may be used for natural and artificial gas, re-

spectively, which includes a double needlevalve, the inner or smaller of which may be closed when artificial gas is used and the outer and larger of which may be closed when the natural gas is used, or both orifices maybe used if found advisable or necessary.

IIn the accompanying drawings, Figure I is a side elevation of the burner. Fig. 2 is a vertical section thereof; and Figs. 3 and 4 are similar sections, on a larger scale, with the valves in different positions.

Referring' specifically to the drawings, c indicates the cap or base screwed to the nipple of the gas-pipe, and this cap terminates in a reduced nipple a', which carries a centrallyprojecting needle c, which governs the inner or smaller valve. Openings are provided around the base of the needle to permit the fiow of gas from within the nipple. The'nipple c is exteriorly screw-threaded to receive an adjustable tube which at its upper end is reduced and screw threaded to engage within the check-plate or cap c. This tube carries at its upper end a hollow conical needle or valve 7)', which fits over the point of the needle c2 and also within the orifice e in the check-plate. Openings (indicated at Z22) are provided around the hollow needle to allow the passage of the gasoutside the said nee'- dle and through the orifice c when said valve is open, as indicated in Fig. lf. The tube also carries an exterior milled rim b3, whereby it may be grasped by the fingers and turned to adjustment, as hereinafter described. The needle c2 fits the hollow in the needle b and is adapted to open and close the orifice therein, according to themanipulation of thetube.

At f the Bunsen tube isindicated, having air-holesf', and this tube is eXteriorly threaded to receive the bell-regulator g, which provides an adjustable rest for the mantle-support and other parts of the burner when the fitting is assembled. The tube f is threaded onto the check-plate c. At d a supplemental o r outer tubeis indicated having threaded engagement at the upper end with the plate c and at the lower end with the base c. Manipulation of' this tube d permits an adjustment of the plate c to vary the distance thereof from the needle a2, since the said needle is fixedly carried by the base a, and the tube d, carrying the plate c, is removable withrespect thereto. Furthermore, the adjustment of the bell g on the tube f varies the distance of the mantle from the orifice in said plate. The tube d has openings CZ' in the side, whereby the milled portion of the tube bmay be grasped and turned.

In operation with the above construction it is possible by manipulation of the tube b to open either the large annular orifice e and close IOO ` the small circular orifice through the needle or to open the latter and close the former or to open both partially When the tube is screwed upwardly or outwardly, its needle closes the major or outer portion of the orifice e and opens the small passage around the needle e2. i/Vhen said tube is screwed down, the needle a2 closes the passage in the needle L and the orifice e is opened. In the former case the gas passes directly through the tube L and its needle L. In the latter case it passes out ot' the tube through the openings Hz and thence through the oriiice e. rlhe former adjustment is particularly useful with natural gas and the latter with artificial gas. By setting the tube in an intermediate position gas may be allowed to escape through both oriiices, which will be iound advantageous under some conditions. The play of the tube 7; and its valve may be varied or regulated by adjusting the relative positions or' the base e and plate c. rfhis adjustment is effected by means ot' the tube (Z. By unscrewing said tube the cheekplate c is raised accordingly, permitting a correspondingly larger escape of the gas at e when the tube I) is lowered. Also the distance of the mantle from the oriliee may be regulated by adjustment of the bell g, as hereinbet'ore indicated.

Whatl claim as new, and desire to secure by Letters Patent, is-

l. 1n a gas-burner, the combination with a member having a gas-orifice therein, of a valve for the orifice having a gas-passage therethrough, and another valve controlling said passage, and a single supply-pipe communieating with both Valves.

2. In a gas-burner, the combination with a single supply-tube, and a cheek-plate therein having a gas-orifice, of a needle-valve opposite the orifice, and a tapering tube working between the oritice and the needle, and having openings therethrough, as and for the purpose speeiied.

3. In a gas-burner,the combination with the tube, of a check-plate therein having a gasorilice, a tapering tube-valve having openings through the side thereotand the end ol which is movable into or out ot the orifice to contract or enlarge the same, and a needle-valve iitting the tube and acting' to close the same when the tube is moved out ol the oriliee.

4. ln a gas-burner, the combination with a tube having a nipple therein carrying a eentral needle-valve, and acheek-plate across the tube having' an orilice opposite the needle, el an intermediate adjusting-tube threaded onto the nipple and having a hollow tapered point working between the needle and oriliee, and a single gas-supply to both the inside and outside ot the adjusting-tube, as and lor the purpose stated.

5. ln a gas-burner, thecombination with an outer tube having therein a cheek-plate with a gas-orilice, and a nipple having a needle opposite the oriliee, the cheek-plate and needle being relatively adjustable to vary the distance of the latter irom the orifice, ol a perforated inner tube threaded on the nipple and having a tapered portion at one end adjustable between the needle and the orilice.

6. ln a gas-burner, the combinatimi with a, base having a nipple and needle projecting centrally therefrom, with gas-passages around the needle, an outer tube screwed on the base and having linger-openings, a cheel\'-plate in the tube, having an oriliee opposite the needle, and a perforated :uljusting-tube on the nipple accessible through the openings and having a tapered end adjustable between the needle and orilice.

I n testimony whereof l do aliix m v signature in presence ot' two witnesses.

THOMAS E. CII'ARL'VION.

ldlitnesses:

JouN A. Homin/mur, Lo'r'rm NnwUaN. 

